A. 
Prior to submitting the preliminary subdivision and land development plan, applicants are urged to consult with the Township, the Allegheny County Planning Department and the County Conservation District on the requirements for safely managing stormwater runoff from the development site in a manner consistent with the municipal ordinances and applicable watershed stormwater management plan. These agencies may be helpful in providing the data that are necessary for preparing the stormwater management plan.
B. 
Applicants are encouraged to submit a sketch plan with a narrative description of the proposed stormwater management controls for general guidance and discussion with the municipal and other agencies.
C. 
The preapplication phase is not mandatory, and any review comments provided by municipal or other agencies are advisory only and do not constitute any legally binding action on the part of the municipality or any county agency.
A. 
General format. The stormwater plan shall be prepared using the general requirements for plan format contained in this chapter, and those of § 84-125 of the Zoning Chapter, with the following additions:
(1) 
Watershed location. A key map showing development site location within the designated watershed and watershed subareas (consult watershed stormwater plans for boundaries) shall be provided. On all site drawings, the boundaries of the watershed(s) and subareas as they are located on the development site and identify watershed name(s) and subarea number(s) shall be shown.
(2) 
Floodplain boundaries. The one-hundred-year floodplains on the development site (as appropriate) based on the municipal Flood Insurance Study maps or a determination by another method acceptable to the Township shall be identified.
(3) 
Natural features. All bodies of water (natural and artificial), watercourses (permanent and intermittent), swales, wetlands and other natural drainage courses on the development site or which will be affected by runoff from the development shall be shown.
(4) 
Soils. An overlay showing soil types and boundaries within the development site (consult the County Soil Conservation Service and United States Geological Survey for information) shall be provided.
(5) 
Contours. Existing and final contours at intervals of two feet (in areas with slopes greater than 15%, five-foot contour intervals may be used) shall be shown.
(6) 
Stormwater management controls. Any existing stormwater management or drainage controls and/or structures, such as sanitary and storm sewers, swales, culverts, etc., which are located on the development site or which are located off-site but will be affected by runoff from the development shall be shown.
B. 
Professional certification. The stormwater management plan, including all calculations, must be prepared and sealed by a registered professional engineer with training and expertise in hydrology and hydraulics. Documentation of qualifications may be required by the Township.
C. 
Runoff calculations. Calculations for determining pre and post-development discharge rates and for designing proposed stormwater control facilities must be submitted with the stormwater management plan. All calculations shall be prepared using the method and data prescribed by § 84-125 of the Township of Pine Code.
D. 
Stormwater controls. All proposed stormwater runoff control measures must be shown on the plan, including methods for collecting, conveying, and storing stormwater runoff on-site which are to be used both during and after construction. Erosion/sedimentation controls shall be shown. The preliminary plan should provide information on the general type, location, sizing, etc., of all proposed facilities and their relationship to the existing watershed drainage system. If the development is to be constructed in stages, the applicant must demonstrate that stormwater facilities will be installed to manage stormwater runoff safely during each stage of development.
E. 
Easements, rights-of-way and deed restrictions. All existing and proposed easements and rights-of-way for drainage and/or access to stormwater control facilities shall be shown and the proposed owner identified. Show any areas subject to special deed restrictions relative to or affecting stormwater management on the development site.
F. 
Other permits and approvals. A list of any approvals or permits relative to stormwater management that will be required from other governmental agencies (e.g., an obstructions permit from Pennsylvania Department of Environmental Protection) and anticipated date of submission/receipt should be included with the preliminary plan submission. Copies of applications may be requested by the Township where they may be helpful for the stormwater plan review.
G. 
Maintenance program. The preliminary application shall contain a proposed maintenance plan for all stormwater control facilities, in accordance with the following:
(1) 
The identification of the proposed ownership entity (e.g., Township, property owner, a homeowners' association or other management entity).
(2) 
The inclusion of a maintenance program for all facilities, outlining the type of maintenance activities, probable frequencies, personnel and equipment requirements and estimated annual maintenance costs.
(3) 
The identification of the method of financing continuing operation and maintenance if facility is to be owned by other than the Township or other governmental agency.
This submission shall contain the following:
A. 
All information pertaining to stormwater management from the preliminary plan along with any changes.
B. 
Final plan maps and drawings showing the exact nature and location of all temporary and permanent management controls, along with design and construction specifications.
C. 
A schedule for the installation of all temporary and permanent stormwater control measures and devices.
D. 
An accurate survey showing all current and proposed easements and rights-of-way and copies of all proposed deed restrictions.
E. 
A maintenance program establishing ownership and maintenance responsibilities for all stormwater control facilities (identify specific person or entity) and detailing financial requirements and source of funding. Any legal agreements required to implement the maintenance program and copies of the maintenance agreement as specified in § 84-125G, maintenance of stormwater control facilities, shall be submitted.
F. 
Financial guaranties consistent with this chapter to ensure that all stormwater controls will be installed properly and function satisfactorily.
A. 
Preliminary and final plans required. Stormwater management plans, in accordance with the requirements of this chapter, will be submitted with the preliminary and final subdivision or land development plan application.
B. 
Review by Township Engineer and Conservation District. Preliminary and final plans will be reviewed by the Township Engineer and County Conservation District. At its discretion, the Township may also engage other specialists in hydrology or hydraulics to assist with the stormwater plan review.
C. 
Preliminary plan to county planning. A copy of the preliminary plan, along with all runoff calculations, will be forwarded to the Allegheny County Planning Department. A report of the findings will be returned to the Township within 30 days. If the county planning review identifies the possibility of harmful impacts downstream of the development site, the applicant will be advised so that the necessary modifications can be made to the stormwater management controls for the development site. The Township Engineer shall not approve a preliminary stormwater plan, which receives a negative watershed impact review from county planning.
D. 
Notification of affected municipalities. The Township shall notify municipalities upstream and downstream of the development site, which may be affected by the stormwater runoff and proposed management system for the site, when both the preliminary and final plan applications are submitted. Copies of the plans will be made available to the municipalities upon request. Comments received from any affected municipality will be considered by the Township Engineer and will be submitted with the Engineer's report to the Planning Commission and governing body.
E. 
Township Engineer's review. The Township Engineer shall approve or disapprove the preliminary and final stormwater management plan based on the requirements of the municipal ordinances, the standards and criteria of the watershed plan and good engineering practice. The Engineer shall submit a written report, along with supporting documentation, to the Planning Commission for its consideration as part of the overall subdivision or land development plan review.
F. 
Status of the Township Engineer's determination. The approval/disapproval of the site's stormwater management plan by the Township Engineer shall be considered final. The applicability or effectiveness of the previously approved stormwater management controls. Further, if for any reason development activities are suspended for two years or more, then the same specific control measure in contradiction to the Engineer's action. The Commission or governing body can request modifications or alternative approaches to the stormwater management controls, provided that these are agreed to by the Township Engineer and the applicant's engineer.
G. 
Approval of stormwater plan required for subdivision/land development approval. No preliminary or final approval shall be granted for the overall subdivision of land development application until a stormwater management plan for the site has been approved.
H. 
Permits required from other governmental agencies. Where the subdivision or land development application requires an obstruction or erosion or sedimentation permit from the Pennsylvania Department of Environmental Protection, then final subdivision or land development plan approval shall be conditional upon receipt of such permits. However, no building permit shall be issued or construction started until the permits are received and copies filed with the Township.
No stormwater plan shall be given any approval unless it is certified by the Township Engineer as being in compliance with all applicable standards of the Township of Pine Code and, in particular, the provisions of Chapter 84, Zoning, relating to performance standards, design criteria, erosion and sedimentation control and maintenance and inspections, the provisions of which are hereby incorporated herein by reference.
Upon final subdivision and land development plan approval, the applicant may commence to install or implement the approved stormwater management controls, subject to the provisions of § 84-125 of the Township of Pine Code. If site development or building construction does not begin within two years of the date of final approval of the subdivision or land development plan, then before doing so, the applicant shall resubmit the stormwater management plans to verify that no condition has changed within the watershed that would affect the feasibility or effectiveness of the previously approved stormwater management controls. Further, if for any reason development activities are suspended for two years or more, then the same requirement for resubmission of the stormwater management plan shall apply.
Requests for modifications in the finally approved stormwater management controls shall be submitted to the Township Engineer as follows:
A. 
If a request is initiated before construction begins, the stormwater plan must be resubmitted and reviewed according to the procedure in this section.
B. 
If a request is initiated after construction is underway, the Township Engineer shall have the authority to approve or disapprove the modification, based on field inspection, provided that:
(1) 
The requested changes in stormwater controls do not result in any modifications to other approved municipal land use and land development requirements, such as required building setbacks, yards, etc.; and
(2) 
The performance standards contained in § 84-125, Stormwater management, of the Township of Pine Code are met. Notification of the Engineer's action shall be sent to the Planning Commission and governing body. The governing body may issue a stay of stormwater plan modification within five days and require the permittee to resubmit the plan modification for full stormwater plan review in accordance with the procedures in this section.